add a start script as alias to patternlab:serve

Author: moda-schneij

package.json

@@ -28,6 +28,7 @@
  "Paul Wright <paul@paintedbicycle.com>"
  ],
  "scripts": {
+ "start": "npm run patternlab:serve",
  "webpack:version": "webpack --v",
  "patternlab:build": "webpack --mode=production --env.production",
  "patternlab:serve": "webpack-dev-server --mode=development --env.development",